Variable Attentuator/Beamsplitter 10APF units allow mounting a half
waveplate and a polarizing beamsplitter. The result is a combined
Variable Attenuator/Beamsplitter. To attenuate the beam, you can rotate
the waveplate the whole 360°. 10APF3 is a modified 5APH79T
mount. When mounted on the M4 hole in the platform, pivot is applied to
the base instead of the platform. A beamsplitter is mounted via an
adapter to the base. Hence the beamsplitter can be pivoted within ±2.5°
in one coordinate. You can freely rotate the adapter in the base and
clutch it with a fixing screw.